Brown & Watson SPP120, Руководство пользователя

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Q. Will the solar panel charge my flat battery & how long will it take?
A. 1. The SPP20 is designed for ‘topping up’ and maintaining batteries. Given sufficient time it will put some
charge back into the battery.
2. The SPP40, SPP60, SPP80, SPP120 & SPP135 will charge a battery. See table below for recommended
charge times.
Recommended charge times for different solar panels
SPP20 SPP40 SPP60 SPP80 SPP120 SPP135
Automotive 200–750 CCA 250–500 CCA 250–650 CCA 250–900 CCA 250–1200 CCA 300–1300 CCA
Marine 250–800 MCA 250–550 MCA 300–700 MCA 300–1000 MCA 350–1500 MCA 400–2000 MCA
Deep Cycle 20–100 Ah 20–70 Ah 20–100 Ah 30–140 Ah 40–200 Ah 50–240 Ah
Charging times Maintenance 10–30 Hours 8–35 Hours 7–35 Hours 7–35 Hours 7–35 Hours
Q. I am going on a 4WD trip. How many solar panels will I need?
A. It really comes down to how many appliances are drawing power from your battery.
The number of solar panels required should be based on how much power is used over a 24 hour period.
For example: Most people when they go away would run a Fridge, and a couple of lights to cook with etc.
We need to work out how much power would be used in a day.
Energy consumption per day
Appliance Current use/hour Total time of use/day Total Current per day
(Ah) (Hours) (Amps)
Fridge 1.5 24 36
Lights 3 3 9
Grand total 45
So we need to size a solar system that can produce around 45 Amps per day. If we say we get around 10 hours
of solar energy from the panels per day (for summer months). We can then calculate what size and how many
panels we need.
45 amps ÷ 10 hours = 4.5 Amps per hour
So two SPP40 solar panels wired in parallel or one SPP80 to produce 4.6 Amps an hour should be more than
enough. You might find that during cloudy weather you will have to charge the battery by running your car for
half an hour every second or third day
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